The correct reactivity order of following C=C/C=C bonds towards `Br^(o+)` is :

Options

A. `4gt3gt2gt1`
B. `3gt2gt1gt4`
C. `1gt3gt4gt2`
D. `1gt3gt2gt4`

Answer

D

Explanation

C=C at position 1 is more reactive towards electrophile `Br^(o+)` as this is adjacent to O atom to provide +m effect.C=C at position 3 is more substituted as compared to C= C at position 2.
C= C is less reactive towards `Br^(o+)` as compared to C = C